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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Myo10m1J
mutation 1 Jackson
MGI:5578506
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Myo10m1J/Myo10m1J B6.Cg-Myo10m1J/GrsrJ MGI:5604096
hm2
Myo10m1J/Myo10m1J involves: C57BL/6J MGI:6116650


Genotype
MGI:5604096
hm1
Allelic
Composition
Myo10m1J/Myo10m1J
Genetic
Background
B6.Cg-Myo10m1J/GrsrJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myo10m1J mutation (1 available); any Myo10 mutation (612 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye

integument
• homozygotes have a white belly spot and, more rarely, a white spot on the back of an otherwise black coat
• homozygotes often have irregular regions of diminished pigment on the tail

pigmentation
• homozygotes have a white belly spot and, more rarely, a white spot on the back of an otherwise black coat
• homozygotes often have irregular regions of diminished pigment on the tail

limbs/digits/tail
• homozygotes often have irregular regions of diminished pigment on the tail
• fused digits on either or both of the front feet, but not the hind feet

growth/size/body
• slightly smaller than normal

skeleton




Genotype
MGI:6116650
hm2
Allelic
Composition
Myo10m1J/Myo10m1J
Genetic
Background
involves: C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myo10m1J mutation (1 available); any Myo10 mutation (612 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• less than half of homozygotes obtained from heterozygous matings survived birth; these were able to feed, develop into adults, and mate successfully
• although homozygotes obtained from heterozygous matings were present at normal Mendelian ratios at E12.5-E17.5, homozygous mutant pups were obtained at less than half the expected number, with 14 of 174 (8%) being mutant pups versus 48 of 174 (28%) wild-type pups; fetuses undergoing resorption were also observed

growth/size/body
• 9% of embryos exhibited gross developmental defects such as very small size
• embryos were slightly smaller than controls even in the absence of exencephaly or other major defects
• at P21 and P28, the average body weight was slightly smaller than that of wild-type and heterozygous controls

nervous system
• 18% of embryos exhibited craniorachischisis
• exencephalic embryos showed absence of a cranium and gross defects in brain morphology
• 73% of embryos obtained from heterozygous matings exhibited exencephaly
• 7 of the eight E15.5 embryos obtained from a homozygous mating had exencephaly, including one that also had omphalocele

craniofacial
• exencephalic embryos showed absence of a cranium and gross defects in brain morphology

vision/eye
• at E16.5, eyes exhibited defects in lens formation, often associated with persistent hyaloid vasculature
• at E16.5, some eyes failed to undergo eyelid closure; failure of or delayed eyelid closure was observed both in exencephalic and non-exencephalic embryos
• all 5 of the homozygotes whose eyes were dissected at 6 weeks showed persistent hyaloid vasculature that was pigmented and present bilaterally
• 3 of 14 pups showed severe microphthalmia
• 1 of 14 pups showed anophthalmia

cardiovascular system
• 64% of homozygous embryos from heterozygous matings had blood in the amniotic fluid
• all eight E15.5 embryos obtained from a homozygous mating exhibited blood in the amniotic sac

pigmentation
• 14 of 14 pups had a white belly spot and 4 of 14 also had a white spot on the back
• all (14 of 14) pups showed a white belly spot

limbs/digits/tail
• 6 of 14 pups showed webbed digits on one or both forelimbs

embryo
• 9% of embryos exhibited gross developmental defects such as very small size
• embryos were slightly smaller than controls even in the absence of exencephaly or other major defects
• 18% of embryos exhibited craniorachischisis

integument
• 14 of 14 pups had a white belly spot and 4 of 14 also had a white spot on the back
• all (14 of 14) pups showed a white belly spot

skeleton
• exencephalic embryos showed absence of a cranium and gross defects in brain morphology

liver/biliary system
• 1 of the eight E15.5 embryos obtained from a homozygous mating was very small and appeared to lack a liver

behavior/neurological
N
• young adult homozygotes did not display obvious circling or shaking and showed a normal Preyer reflex





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last database update
10/22/2024
MGI 6.24
The Jackson Laboratory